Denture attachment



l. STERN DENTURE ATTACHMENT Filed April 2 1924 INVENTOR Isidore SEW/"M lF eilemlleel well M ISIDQRE STERNLOF NEW YORK. N. Y.

meQee-em Appliceti on filed April 2 ega seri l no. #403,587.

To all whom it may cqnqe m:

lee it kpqwnphaft I,jl['s11)e1a1a STERN, a citi- To'f 'Un't' "cl St es, res v New York Stale V Wei Vented celthgin neweind "use-n11 Ifnpr veme'nt-s inDehtilrepktteehpressingfenfd yiejldableM wlngswhieh engage teethseeketfsjljqi the purpose of held in ibil 'i ilgesi in positier'i.

' heegri strueti bnpf the denture attach eme m a lfbe x aji'iedin eerfpain particulars "filthqiitftlepafbih'g from the soeket of the preseiit in yg'el fn'ion; ajnd th'e ac'eempanying drawings illustrate a preferred form thereof."

*jFigure lshogws an assembly View of the bridge and pier teeth embodying the present pi ev men Figureljfi"illustrates a eluster projection of the denturefettaehment shelving the top,

rear anolsicle views thereel.

i ilre 3' shews an elilarged perspeetive iew et the" denture ettaehment;

Referring hew merein pa -tieuler to the dfewihgs {or a detailed description of Lhe 'irlVenjzionfthex-e is shown 2 bridge B inpen pes ecl between the piei teeth 5; and the pier "teeth are ilsually" provided with inlays 6 which carry sockets 7 for the reception of the adjpst'eble anchor head forming an integral pait of the bridge B. The bridge 13 maybe removed at my time for the purpose Of cleerii g the papits and makir lg a readjustment thereof for the purpose of tlghteniifithej bridge to improve itsfunetion.

efel'ring to the detailed views of the deneblytepelfed slightlj to ehebl'ef thepept to he Yphe pa -m9 zind zi re snbm pigm sel'ijd ture enehqr heed it self phere is shoyv n a nl tl'lejheeclperc 12. "A plane ef eleavege er wings 14.- fill in and lap back upon the tapered body thereby replacing that portion 'of the metal as removed when the head part 10 was tapered from the central portion towards the edge thereof. This arrangement and structure affords a head 10 which is substantially rectangular in cross' section, yet at the same time provides the tapered wings integrally formed therewith. The plane; of cleavage which separates the I head 10 from the wings 14 extends intothe openings 15 and inasmuch as each hole 15 isiworked out substantially close to the outer i "onto the head part 10. i

wall of the wing and head, it follows that the said hole 15 increases the flexible tractor inherent in the spring wing.

The device as described is very strong and durable andis capable of very delicate adjustment, and continued long-period adjustment and use will not' impair the strengthof the part 9 connected or built Whatl claim is:

I 1. In combination, dental bridgework comprising a pier tooth member provided with a socket, a bridge disposed adjacent the pier tooth, a shank integral with the bridge and reaching toward the pier tooth socket,

rectangular-shaped head made on the shank and slidably confined in the head, said head having a cleavage plane made to either side thereof; which provides flexible pressure 2. Incombination, dental bridgework,

' comprising a pier tooth member provided with a socket, a bridge disposed adjacent the pier tooth, ashank integral with the bridge and reaching toward the'pier tooth socket,

a rectangular-shaped head made on the i shank forming a T shaped anchor head adapted to fit in thesocket, the said T-he'ad having each[ outer end thereof tapered and thus providing a central heavy body'portion v inthe head, a tapered flexible spring pressure wing integrally joined to the T-head at each outer tapered end thereof which fills inthe tapered portion and provides a substantially rectangular-shaped head, said wings having each inner edge thereof terminated adjacent the central heavy body portionofthe' head, and said head having an adjustment plane of cleavage or separation provided between each wing and the T-head anchor part for expanding the wing tips outwardly away from the central heavy body portion to increase the pressure exerted thereby against the socket walls.

3. A denture anchor head comprising a flat rectangular head piece shaped down from the center to form parallel edges tapered in cross section and leaving the central part thereof substantially heavy, a shank joined to the central heavy portion of the head piece and providing a T-shaped anchor head, a tapered wing integrally joined to each outer end of the tapered head part andhaving the free edges thereof lapping back toward the central heavy head part, and aid wings adapted to be expanded and press yieldingly.

4:. A denture anchor head comprising a fiat rectangular head piece shaped down from the center to form parallel edges tapered in cross section and leaving the central part thereof substantially heavy, a

, shank joined to the central heavy portion of the head piece and providing a T-shaped anchor head, a tapered wing integrally joined to each outer end of the tapered head part and having the free edges thereof lapping back toward the central heavy head part, said wings adapted to be expanded and press yieldingly, and said head provided with an opening near the outer edge thereof running longitudinally through the part and adaptedto impart fiexibility to the wings.

5; A denture anchor head comprising a flat rectangular head piece shaped down from the center to form edges tapered in cross section and leaving the central part thereof substantially heavy, a shank joined to the contral heavy portion of the head piece and providing a T-shaped anchor head, a tapered wing integrally joined to each outer end of the tapered head part and having the free ed 'es thereof lapping back toward the centra heavy head part forming parallel front and back surfaces, said wings adapted to be expanded andpress yieldingly, said head provided with an opening near each outer edge thereof running longitudinally through the part and adapted to impart flexibility to the wings, and said head piece provided with a plane of cleavage or separation setting off each wing and extending to the opening in which a tool may be inserted to spread the wings.

6. A denture attachment comprising a shank piece by which the device is fastened to a bridge, afiat plate head piece made on one end of the shank, one face of the head piece being shaped down from the region of the shank joinder to each outer edge thereof forming a taper, a tapered Wing having its outer thicker wing edge joined to the outer thin head edge and lapping back along the tapering head wall'to provide a head piece substantially rectangular in cross section.

7. A denture attachment comprising a shank piece by which the device is "fastened to a bridge, a fiat plate head piece made on one end of the shank, one face of the head piece being shaped down from the region of said denture provided with plane of sepathe shank jo-inder to each outer edge thereof ration between the Wings and the head part forming a taper, tapered Wing having its by which the wings are spread to adjust the 10 outer thicker Wing edge joined to the outer denture.

5 thin head edge and having its tapered shape In testimony whereof I affix my signature.

lapping back along the tapered Wall to provide front and back parallel head faces, and lblDOltE STERN. 

